COMP Cams Camshaft CS 287Qs9 .900 Base

This COMP Cams camshaft kit includes the camshaft itself, featuring a .900-inch base circle designed to give you extra clearance for connecting rods in stroker crankshaft applications. It's a popular choice for street 383 stroker engines that already have good cylinder heads. The camshaft is built from steel billet cores and uses a cast iron distributor gear, with a tight lobe separation that helps create a throaty exhaust note and strong performance.

What sets this camshaft apart is its 4-Pattern lobe design. Unlike traditional cams that treat all cylinders the same, this one has unique intake and exhaust lobe profiles for the inboard and outboard cylinders. This advanced design accounts for the different runner lengths in V8 intake manifolds, optimizing when the valves open and close for each cylinder. This can lead to a significant increase in the engine's powerband and high-RPM stability, potentially adding 5-20+ horsepower over other hydraulic roller cams. It's important to note that this camshaft requires upgraded valve train components and aftermarket cylinder heads to perform correctly. Also, you must use a melanized or nitrided distributor gear; a standard cast iron or steel gear will void the warranty.

This camshaft fits a wide range of Chevrolet small block engines from 1958 to 2002, including popular models like the Camaro, Corvette, and C10 trucks. It's specifically designed for engines that do not have factory roller lifter provisions or for those that have been retrofitted. Always check your specific engine block to confirm it's a flat tappet block or a roller block that can accept this type of camshaft. For optimal performance and longevity, ensure you have the necessary supporting modifications like roller lifters and upgraded heads.